Vacuum breaker valve



FIG. 1 is a perspective view taken from the top, front and left side of a vacuum breaker valve showing my new design;

FIG. 2 is a perspective view taken from the top, rear and left side thereof;

FIG. 3 is a side elevational view thereof, the other sides being the same as the side shown;

FIG. 4 is a rear end elevational view thereof; and

FIG. 5 is a front end elevational view thereof. 

The ornamental design for a vacuum breaker valve, as shown and described. 